After upgrading the CDD QA server from 6.9 to 8.2, the CDD Server/URL was not responsive. Trying to load the load balanced URL would just sit there spinning until it finally received:
Processing of this request was delegated to a server that is not functioning properly.
Release : 8.2
Component : CONTINUOUS DELIVERY DIRECTOR
In the Tomcat8.5\logs\tomcat8-stderr.2021-06-15.log we found the following messages:
... Unexpected death of background thread [ContainerBackgroundProcessor[StandardEngine[Catalina]]]
java.lang.OutOfMemoryError: Java heap space
Add more memory to Tomcat. To do this we followed these steps: